<?php
/**
 * Description
 *
 * PHP version 7
 *
 * @category Custom
 * @package  Custom
 * @author   ryu <mo5467@126.com>
 * @date     2020-04-28 01:40:21
 * @lastTime 2020-05-01 23:09:47
 * @license  https://opensource.org/licenses/MIT MIT License
 * @link     none
 */
namespace Design\Behavioral\Mediator;

interface Mediator
{


    public function getUser(string $user) : string;


}//end interface
